Featured Research

from universities, journals, and other organizations

New Light On Link Between Snoring And Cognitive Deficits In Children

Date:
October 10, 2008
Source:
American Thoracic Society
Summary:
About two-thirds of children with sleep-disordered breathing (SDB) -- snoring or obstructive sleep apnea -- have some degree of cognitive deficit, but the severity of the cognitive deficit has been notoriously difficult to correlate to the severity of the SDB, suggesting that other important issues may be at play, or that the right factors were simply not being measured.

About two-thirds of children with sleep-disordered breathing (SDB)— snoring or obstructive sleep apnea (OSA)— have some degree of cognitive deficit, but the severity of the cognitive deficit has been notoriously difficult to correlate to the severity of the SDB, suggesting that other important issues may be at play, or that the right factors were simply not being measured.

A new study that will be published in the first issue for November of the American Thoracic Society's American Journal of Respiratory and Critical Care Medicine opens the door to understanding the complex relationship between sleep, breathing and brain function in a whole new way.

"A history of snoring is a predictor for cognitive deficit in children with SDB," said principle investigator Raouf Amin, M.D., professor of pediatrics and the director of the Division of Pulmonary Medicine at Cincinnati Children's Hospital Medical Center. "However, the frequency of apnea events during sleep does not predict cognitive deficit and does not correlate with the degree of cognitive deficit. Such a paradox raised the question of whether there are some variables that we do not traditionally measure in the sleep laboratory that might modify the effect of SDB on cognition."

Dr. Amin and colleagues measured a new parameter to determine whether it could explain the variability in cognitive dysfunction better than the severity of SDB: the degree to which the brain's blood remains oxygenated during sleep. Using a technology called near infrared spectroscopy, which is able to penetrate the skull with high-powered light beams to assess oxygen saturation, they measured the "regional cerebral oxygen concentration" (SrO2) in children 7 to 13 years old with SDB to varying degrees. They also measured blood pressure (BP) during sleep.

As expected, they found that children with snoring had lower regional cerebral oxygen concentration than healthy children. But, paradoxically, they found that children with sleep apnea, which is usually considered a more severe degree of sleep-disordered breathing, have higher regional cerebral oxygen concentration than children with just snoring.

"During normal sleep, when breathing appears to be stable, there seems to be higher oxygen in the brain among children with sleep apnea compared even to normal children," said Dr. Amin, who attributes the unexpected finding to the sleep apnea raises blood pressure. "Children with sleep apnea have higher BP compared to children with snoring. This may explain why paradoxically we find higher oxygen levels in children with OSA."

This study opens the door to a new area of study, said David Gozal, M.D., professor of pediatrics and director of the Kosair Children's Hospital Research Institute at the University of Louisville, who wrote the accompanying editorial in the journal. "It shows us that what is happening in children with OSA and that neurocognitive deficits are not just in the brain matter but involve the cardiovascular system as well."

More than anything, the study opens up avenues of inquiry for investigating the perplexing link between SDB and cognitive deficits in children. Understanding the source of that association will be key in future efforts to treat or prevent it.

"By taking into account the role of blood pressure in regulating the amount of oxygen concentration in the brain, we might have a better understanding of the relationship between sleep-disordered breathing and cognitive deficit," concluded Dr. Amin.


Story Source:

The above story is based on materials provided by American Thoracic Society. Note: Materials may be edited for content and length.


Cite This Page:

American Thoracic Society. "New Light On Link Between Snoring And Cognitive Deficits In Children." ScienceDaily. ScienceDaily, 10 October 2008. <www.sciencedaily.com/releases/2008/10/081007073924.htm>.
American Thoracic Society. (2008, October 10). New Light On Link Between Snoring And Cognitive Deficits In Children. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2008/10/081007073924.htm
American Thoracic Society. "New Light On Link Between Snoring And Cognitive Deficits In Children." ScienceDaily. www.sciencedaily.com/releases/2008/10/081007073924.htm (accessed August 20, 2014).

Share This




More Mind & Brain News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Charter Schools Alter Post-Katrina Landscape

Charter Schools Alter Post-Katrina Landscape

AP (Aug. 20, 2014) Nine years after Hurricane Katrina, charter schools are the new reality of public education in New Orleans. The state of Louisiana took over most of the city's public schools after the killer storm in 2005. (Aug. 20) Video provided by AP
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
Powered by NewsLook.com
Kids' Drawings At Age 4 Linked To Intelligence At Age 14

Kids' Drawings At Age 4 Linked To Intelligence At Age 14

Newsy (Aug. 19, 2014) A study by King's College London says there's a link between how well kids draw at age 4 and how intelligent they are later in life. Video provided by Newsy
Powered by NewsLook.com
Mental, Neurological Disabilities Up 21% Among Kids

Mental, Neurological Disabilities Up 21% Among Kids

Newsy (Aug. 18, 2014) New numbers show a decade's worth of changes in the number of kids with disabilities. They suggest mental disabilities are up; physical ones are down. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins